I am looking for a board to use with 4,8-6,5 - bump and jump condition. Mainly jibing, duck jibing, small jumps (maybe a forward loop) and a few freestyle attempts (old school). Which of the two will fit the best? (my weight - 82 kg)

Both boards can handle that. The K96 will do jibes and stuff with more "flair" though. The Futuras turn well, but like a longer arc. On the other hand, the Futuras are a faster and have a way of staying stably in overpower and chop. The Kombats are more lively and easier for chops hops. Both can do carving 360:s and oldschool freestyle, but the Kombat is easier and does it in a more natural way.